/* Base Styles */
:root {
    --primary: #ff6b35;
    --primary-dark: #e55a2b;
    --secondary: #004e89;
    --accent: #2ec4b6;
    --success: #2ecc71;
    --warning: #f39c12;
    --danger: #e74c3c;
    --dark: #1a1a2e;
    --darker: #0f0f1a;
    --light: #f8f9fa;
    --gray: #6c757d;
    --card-bg: #16213e;
    --card-border: #1f3460;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--darker);
    color: var(--light);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--darker) 100%);
    padding: 80px 0;
    text-align: center;
    border-bottom: 1px solid var(--card-border);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: 1.5rem;
    color: var(--light);
    margin-bottom: 0.25rem;
}

.hero .subtitle {
    font-size: 1rem;
    color: var(--gray);
    font-style: italic;
}

/* Metrics Section */
.metrics {
    padding: 60px 0;
    background: var(--dark);
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: 2rem;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.metric-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.metric-label {
    display: block;
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.metric-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: rgba(46, 204, 113, 0.2);
    color: var(--success);
}

.metric-status.safe { background: rgba(46, 204, 113, 0.2); color: var(--success); }
.metric-status.optimal { background: rgba(46, 196, 182, 0.2); color: var(--accent); }
.metric-status.active { background: rgba(255, 107, 53, 0.2); color: var(--primary); }

/* Status Cards */
.status-cards {
    padding: 40px 0;
    background: var(--darker);
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.status-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
}

.status-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.status-card.habitat h3 { color: var(--success); }
.status-card.update h3 { color: var(--primary); }

/* Milestone Section */
.milestone {
    padding: 40px 0;
    background: var(--dark);
}

.milestone-card {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(46, 196, 182, 0.1) 100%);
    border: 1px solid var(--primary);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
}

.milestone-card .trophy {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.milestone-card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.milestone-date {
    color: var(--gray);
    font-style: italic;
    margin-top: 1rem;
}

/* Timeline Section */
.timeline {
    padding: 60px 0;
    background: var(--dark);
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    margin-bottom: 40px;
    border-left: 2px solid var(--card-border);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--card-bg);
    border: 2px solid var(--success);
    border-radius: 50%;
}

.timeline-item.today::before {
    background: var(--primary);
    border-color: var(--primary);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.timeline-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(46, 204, 113, 0.2);
    color: var(--success);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.timeline-badge.today {
    background: rgba(255, 107, 53, 0.2);
    color: var(--primary);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--light);
}

.timeline-content ul {
    list-style: none;
    margin-bottom: 0.75rem;
}

.timeline-content li {
    padding: 4px 0;
    color: var(--gray);
}

.timeline-content li::before {
    content: '└ ';
    color: var(--accent);
}

.timeline-note {
    font-style: italic;
    color: var(--gray);
    font-size: 0.9rem;
    padding: 12px;
    background: rgba(46, 196, 182, 0.1);
    border-radius: 8px;
    margin-top: 0.5rem;
}

/* Donate Section */
.donate {
    padding: 60px 0;
    background: var(--darker);
}

.donate .intro {
    text-align: center;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    color: var(--gray);
}

.track-record {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 2rem;
}

.track-record h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--accent);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.stat {
    padding: 8px;
    color: var(--gray);
}

.stat strong {
    color: var(--light);
}

.progress-bar {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 2rem;
    text-align: center;
}

.progress-label {
    margin-bottom: 1rem;
    color: var(--light);
}

.progress-track {
    height: 20px;
    background: var(--darker);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 10px;
    transition: width 0.5s ease;
}

.progress-text {
    color: var(--gray);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.impact-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
}

.impact-card .icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.75rem;
}

.impact-card h4 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.impact-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

.impact-card.highlight {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, var(--card-bg) 100%);
}

/* Levels Section */
.levels {
    padding: 60px 0;
    background: var(--dark);
}

.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.level-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.level-card.current {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, var(--card-bg) 100%);
}

.level-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
}

.level-card h3 {
    font-size: 1rem;
    color: var(--light);
    margin-bottom: 0.5rem;
}

.level-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255, 107, 53, 0.2);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.level-price {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(46, 196, 182, 0.2);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.level-card ul {
    list-style: none;
    text-align: left;
    font-size: 0.85rem;
    color: var(--gray);
}

.level-card li {
    padding: 4px 0;
}

.level-card li::before {
    content: '• ';
    color: var(--accent);
}

/* FAQ Section */
.faq {
    padding: 60px 0;
    background: var(--dark);
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item h3 {
    color: var(--accent);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.faq-item p {
    color: var(--gray);
}

/* Footer */
footer {
    padding: 60px 0;
    background: var(--darker);
    border-top: 1px solid var(--card-border);
    text-align: center;
}

footer .quote {
    font-style: italic;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 1rem;
    color: var(--light);
}

footer .attribution {
    color: var(--primary);
    margin-bottom: 2rem;
}

footer .copyright {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Technical Specs Section */
.technical {
    padding: 60px 0;
    background: var(--darker);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.tech-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
}

.tech-card h3 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
}

.spec-table tr {
    border-bottom: 1px solid var(--card-border);
}

.spec-table tr:last-child {
    border-bottom: none;
}

.spec-table td {
    padding: 8px 0;
    font-size: 0.85rem;
}

.spec-table td:first-child {
    color: var(--gray);
    width: 45%;
}

.spec-table td:last-child {
    color: var(--light);
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.8rem;
}

/* AI System Section */
.ai-system {
    padding: 60px 0;
    background: var(--dark);
}

.system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.system-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
}

.system-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.system-specs {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--card-border);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    color: var(--gray);
    font-size: 0.85rem;
}

.spec-value {
    color: var(--light);
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.8rem;
    text-align: right;
}

/* Nitrogen Cycle Section */
.nitrogen-cycle {
    padding: 60px 0;
    background: var(--darker);
}

.cycle-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.cycle-step {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    flex: 1;
    min-width: 180px;
    max-width: 220px;
}

.cycle-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.cycle-step h4 {
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.cycle-step p {
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.cycle-metric {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.75rem;
    color: var(--primary);
    background: rgba(255, 107, 53, 0.1);
    padding: 4px 8px;
    border-radius: 4px;
}

.cycle-arrow {
    font-size: 2rem;
    color: var(--accent);
    font-weight: bold;
}

.toxicity-chart {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.toxicity-chart h3 {
    text-align: center;
    color: var(--light);
    margin-bottom: 1.5rem;
}

.toxicity-bars {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tox-item {
    display: grid;
    grid-template-columns: 120px 1fr 100px;
    align-items: center;
    gap: 15px;
}

.tox-label {
    font-size: 0.85rem;
    color: var(--gray);
}

.tox-bar {
    display: flex;
    height: 24px;
    border-radius: 4px;
    overflow: hidden;
    font-size: 0.7rem;
}

.tox-safe {
    background: var(--success);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
}

.tox-warn {
    background: var(--warning);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
}

.tox-danger {
    background: var(--danger);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
}

.tox-current {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.8rem;
    color: var(--success);
}

/* Behavior Log Section */
.behavior-log {
    padding: 60px 0;
    background: var(--dark);
}

.behavior-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.behavior-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
}

.behavior-card h4 {
    color: var(--light);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.behavior-meter {
    height: 8px;
    background: var(--darker);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent) 0%, var(--primary) 100%);
    border-radius: 4px;
}

.behavior-card p {
    font-size: 0.85rem;
    color: var(--gray);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .tagline {
        font-size: 1.1rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
    
    .timeline-item {
        padding-left: 24px;
    }

    .cycle-diagram {
        flex-direction: column;
    }

    .cycle-arrow {
        transform: rotate(90deg);
    }

    .cycle-step {
        max-width: 100%;
    }

    .tox-item {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .tox-bar {
        font-size: 0.6rem;
    }
}